I just completed another challenge piece, this one for the Etsy Steam Team. The challenge is Blinded me with Science.
Voting for the challenge is now open. Go here http://etsysteamteam.com/polls/index.php?sid=58414 to vote.
This piece can be found in my etsy shop (http://www.etsy.com/view_listing.php?listing_id=13276276) and is for sale.